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/* -*- mode: c++; c-basic-offset:4 -*-
padwidget.cpp
This file is part of Kleopatra, the KDE keymanager
Copyright (c) 2018 Intevation GmbH
Kleopatra is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
Kleopatra is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
In addition, as a special exception, the copyright holders give
permission to link the code of this program with any edition of
the Qt library by Trolltech AS, Norway (or with modified versions
of Qt that use the same license as Qt), and distribute linked
combinations including the two. You must obey the GNU General
Public License in all respects for all of the code used other than
Qt. If you modify this file, you may extend this exception to
your version of the file, but you are not obligated to do so. If
you do not wish to do so, delete this exception statement from
your version.
*/
#include "padwidget.h"
#include "kleopatra_debug.h"
#include <Libkleo/Exception>
#include "crypto/gui/signencryptwidget.h"
#include "crypto/gui/resultitemwidget.h"
#include "crypto/signencrypttask.h"
#include "crypto/decryptverifytask.h"
#include "utils/gnupg-helper.h"
#include "utils/input.h"
#include "utils/output.h"
#include <QTextEdit>
#include <QToolBar>
#include <QVBoxLayout>
#include <QFontDatabase>
#include <QFontMetrics>
#include <QGroupBox>
#include <QPushButton>
#include <QProgressBar>
#include <QSplitter>
#include <QLabel>
#include <KLocalizedString>
#include <KColorScheme>
#include <KMessageBox>
using namespace Kleo;
using namespace Kleo::Crypto;
using namespace Kleo::Crypto::Gui;
class PadWidget::Private
{
public:
Private(PadWidget *qq):
q(qq),
mEdit(new QTextEdit),
mCryptBtn(new QPushButton(QIcon::fromTheme("document-edit-sign-encrypt"), i18n("Sign / Encrypt Notepad"))),
mDecryptBtn(new QPushButton(QIcon::fromTheme("document-edit-decrypt-verify"), i18n("Decrypt / Verify Notepad"))),
mAdditionalInfoLabel(new QLabel),
mSigEncWidget(new SignEncryptWidget),
mProgressBar(new QProgressBar),
mProgressLabel(new QLabel),
mLastResultWidget(nullptr)
{
auto vLay = new QVBoxLayout(q);
auto btnLay = new QHBoxLayout;
vLay->addLayout(btnLay);
btnLay->addWidget(mCryptBtn);
btnLay->addWidget(mDecryptBtn);
mAdditionalInfoLabel->setWordWrap(true);
btnLay->addWidget(mAdditionalInfoLabel);
btnLay->addStretch(-1);
mProgressBar->setRange(0, 0);
mProgressBar->setVisible(false);
mProgressLabel->setVisible(false);
auto progLay = new QHBoxLayout;
progLay->addWidget(mProgressLabel);
progLay->addWidget(mProgressBar);
mStatusLay = new QVBoxLayout;
mStatusLay->addLayout(progLay);
vLay->addLayout(mStatusLay, 0.1);
auto splitter = new QSplitter;
vLay->addWidget(splitter, 1);
splitter->addWidget(mEdit);
// The recipients area
auto recipientsWidget = new QWidget;
auto recipientsVLay = new QVBoxLayout(recipientsWidget);
auto protocolSelectionLay = new QHBoxLayout;
recipientsVLay->addLayout(protocolSelectionLay);
protocolSelectionLay->addWidget(new QLabel(i18n("<h3>Recipients:</h3>")));
protocolSelectionLay->addStretch(-1);
// Once S/MIME is supported add radio for S/MIME here.
recipientsVLay->addWidget(mSigEncWidget);
splitter->addWidget(recipientsWidget);
mEdit->setPlaceholderText("Enter a message to encrypt or decrypt...");
auto fixedFont = QFont("Monospace", 10);
// This does not work well:
// QFontDatabase::systemFont(QFontDatabase::FixedFont);
mEdit->setCurrentFont(fixedFont);
mEdit->setMinimumWidth(QFontMetrics(fixedFont).averageCharWidth() * 70);
mSigEncWidget->setProtocol(GpgME::OpenPGP);
updateCommitButton();
connect(mCryptBtn, &QPushButton::clicked, q, [this] () {
doEncryptSign();
});
connect(mSigEncWidget, &SignEncryptWidget::operationChanged, q, [this] (const QString &) {
updateCommitButton();
});
connect(mDecryptBtn, &QPushButton::clicked, q, [this] () {
doDecryptVerify();
});
}
void cryptDone(const std::shared_ptr<const Kleo::Crypto::Task::Result> &result)
{
mCryptBtn->setEnabled(true);
mDecryptBtn->setEnabled(true);
mProgressBar->setVisible(false);
mProgressLabel->setVisible(false);
mLastResultWidget = new ResultItemWidget(result);
mLastResultWidget->showCloseButton(true);
mStatusLay->addWidget(mLastResultWidget);
connect(mLastResultWidget, &ResultItemWidget::closeButtonClicked, q, [this] () {
removeLastResultItem();
});
if (result->errorCode()) {
if (!result->errorString().isEmpty()) {
KMessageBox::error(q,
result->errorString(),
i18nc("@title", "Error in crypto action"));
}
return;
}
mEdit->setPlainText(QString::fromUtf8(mOutputData));
mOutputData.clear();
}
void doDecryptVerify()
{
doCryptoCommon();
mProgressLabel->setText(i18n("Decrypt / Verify") + QStringLiteral("..."));
auto input = Input::createFromByteArray(&mInputData, i18n("Notepad"));
auto output = Output::createFromByteArray(&mOutputData, i18n("Notepad"));
auto task = new DecryptVerifyTask();
task->setInput(input);
task->setOutput(output);
try {
task->autodetectProtocolFromInput();
} catch (const Kleo::Exception &e) {
KMessageBox::error(q,
e.message(),
i18nc("@title", "Error in crypto action"));
mCryptBtn->setEnabled(true);
mDecryptBtn->setEnabled(true);
mProgressBar->setVisible(false);
mProgressLabel->setVisible(false);
return;
}
connect (task, &Task::result, q, [this, task] (const std::shared_ptr<const Kleo::Crypto::Task::Result> &result) {
qCDebug(KLEOPATRA_LOG) << "Decrypt / Verify done. Err:" << result->errorCode();
task->deleteLater();
cryptDone(result);
});
task->start();
}
void removeLastResultItem()
{
if (mLastResultWidget) {
mStatusLay->removeWidget(mLastResultWidget);
delete mLastResultWidget;
mLastResultWidget = nullptr;
}
}
void doCryptoCommon()
{
mCryptBtn->setEnabled(false);
mDecryptBtn->setEnabled(false);
mProgressBar->setVisible(true);
mProgressLabel->setVisible(true);
mInputData = mEdit->toPlainText().toUtf8();
removeLastResultItem();
}
void doEncryptSign()
{
doCryptoCommon();
mProgressLabel->setText(mSigEncWidget->currentOp() + QStringLiteral("..."));
auto input = Input::createFromByteArray(&mInputData, i18n("Notepad"));
auto output = Output::createFromByteArray(&mOutputData, i18n("Notepad"));
auto task = new SignEncryptTask();
task->setInput(input);
task->setOutput(output);
const auto sigKey = mSigEncWidget->signKey();
if (!sigKey.isNull()) {
task->setSign(true);
std::vector<GpgME::Key> signVector;
signVector.push_back(sigKey);
task->setSigners(signVector);
} else {
task->setSign(false);
}
task->setEncrypt(mSigEncWidget->encryptSymmetric() || mSigEncWidget->recipients().size());
task->setRecipients(mSigEncWidget->recipients().toStdVector());
task->setEncryptSymmetric(mSigEncWidget->encryptSymmetric());
task->setAsciiArmor(true);
connect (task, &Task::result, q, [this, task] (const std::shared_ptr<const Kleo::Crypto::Task::Result> &result) {
qCDebug(KLEOPATRA_LOG) << "Encrypt / Sign done. Err:" << result->errorCode();
task->deleteLater();
cryptDone(result);
});
task->start();
}
void updateCommitButton()
{
mAdditionalInfoLabel->setVisible(false);
if (!mSigEncWidget->currentOp().isEmpty()) {
mCryptBtn->setDisabled(false);
mCryptBtn->setText(mSigEncWidget->currentOp() + QLatin1Char(' ') + i18n("Notepad"));
} else {
mCryptBtn->setText(i18n("Sign / Encrypt Notepad"));
mCryptBtn->setDisabled(true);
}
if (Kleo::gpgComplianceP("de-vs")) {
bool de_vs = mSigEncWidget->isDeVsAndValid();
mCryptBtn->setIcon(QIcon::fromTheme(de_vs
? "security-high"
: "security-medium"));
mCryptBtn->setStyleSheet(QStringLiteral("background-color: ") + (de_vs
? KColorScheme(QPalette::Active, KColorScheme::View).background(KColorScheme::PositiveBackground).color().name()
: KColorScheme(QPalette::Active, KColorScheme::View).background(KColorScheme::NegativeBackground).color().name()));
mAdditionalInfoLabel->setText(de_vs
? i18nc("VS-NfD-conforming is a German standard for restricted documents for which special restrictions about algorithms apply. The string states that all cryptographic operations necessary for the communication are compliant with that.",
"VS-NfD-compliant communication possible.")
: i18nc("VS-NfD-conforming is a German standard for restricted documents for which special restrictions about algorithms apply. The string states that all cryptographic operations necessary for the communication are compliant with that.",
"VS-NfD-compliant communication not possible."));
mAdditionalInfoLabel->setVisible(true);
}
}
private:
PadWidget *q;
QTextEdit *mEdit;
QPushButton *mCryptBtn;
QPushButton *mDecryptBtn;
QLabel *mAdditionalInfoLabel;
QByteArray mInputData;
QByteArray mOutputData;
SignEncryptWidget *mSigEncWidget;
QProgressBar *mProgressBar;
QLabel *mProgressLabel;
QVBoxLayout *mStatusLay;
ResultItemWidget *mLastResultWidget;
};
PadWidget::PadWidget(QWidget *parent):
QWidget(parent),
d(new Private(this))
{
}

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